No need to get abusive.
It is important to be accurate about this stuff because otherwise some people will think it is literally possible to get risk free tax free returns at 9% over base for 14 years, and thus will be more likely to fall prey to scammers offering such a thing.
My DS also has a Halifax kids monthly saver so I do know something about this account. He didn’t have it in 2008 so I don’t know if there was some kind of unbelievable 10% “special offer” that year. But the interest rate quickly fell to 6% for a while, then 4.5, then 4, 3.5 and now it’s at 2.5. Higher than base for the last 14 years but nowhere near 10% for most of it. But despite being the market leading account in terms of interest, the big catch has always been you can’t put in a lump sum, you can’t save more than £100 a month and you can’t roll up the money from year to year so you don’t get the benefits of compounding at this (relatively) high rate.
As a result, after 14 years of saving the max you are allowed to in this account, your total return from it would be 2.7%. And that is a nominal return, so taking into account inflation it’s a negative real return.
If there is a big balance now (I think you said £20k+) it is NOT because you turned the CTF £250 into £20k with an amazing savings rate which beat the stock market, it’s because you have put almost £20k of your own money into a savings account returning 2.7% nominal.
I think we need to be clear about this a) so others don’t feel bad they didn’t turn water into wine. and b) so people understand why long term
saving for kids in cash is a really bad strategy if you want to actually grow their money.
I’ll look up what a global equity tracker would have returned on £100 a month for 14 years tomorrow….